According to the dmake manual found here: http://lmgtfy.com, you can:

• put "-s" on the command line,
• put the line ".SILENT : blibdirs pure_all" in your Makefile,
• modify your Makefile and put ".SILENT" after the target name in the definition, like:
  mylib.a .LIBRARY : mem1.o mem2.o mem3.o

It will likely support other methods, too, as I only briefly glanced at the documentation.

...roboticus

When your only tool is a hammer, all problems look like your thumb.